/*
 * This file is part of the CMaNGOS Project. See AUTHORS file for Copyright information
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "VMapFactory.h"
#include "VMapManager2.h"

using namespace G3D;

namespace VMAP
{
void chompAndTrim(std::string& str)
{
    while (str.length() > 0)
    {
        char lc = str[str.length() - 1];
        if (lc == '\r' || lc == '\n' || lc == ' ' || lc == '"' || lc == '\'')
            str = str.substr(0, str.length() - 1);
        else
            break;
    }
    while (str.length() > 0)
    {
        char lc = str[0];
        if (lc == ' ' || lc == '"' || lc == '\'')
            str = str.substr(1, str.length() - 1);
        else
            break;
    }
}

IVMapManager* gVMapManager = nullptr;
Table<unsigned int, bool>* iIgnoreSpellIds = nullptr;

//===============================================
// result false, if no more id are found

bool getNextId(std::string const& pString, unsigned int& pStartPos, unsigned int& pId)
{
    bool result = false;
    unsigned int i;
    for (i = pStartPos; i < pString.size(); ++i)
    {
        if (pString[i] == ',')
            break;
    }
    if (i > pStartPos)
    {
        std::string idString = pString.substr(pStartPos, i - pStartPos);
        pStartPos = i + 1;
        chompAndTrim(idString);
        pId = atoi(idString.c_str());
        result = true;
    }
    return result;
}

//===============================================
/**
parameter: String of map ids. Delimiter = ","
*/

void VMapFactory::preventSpellsFromBeingTestedForLoS(char const* pSpellIdString)
{
    if (!iIgnoreSpellIds)
        iIgnoreSpellIds = new Table<unsigned int , bool>();
    if (pSpellIdString != nullptr)
    {
        unsigned int pos = 0;
        unsigned int id;
        std::string confString(pSpellIdString);
        chompAndTrim(confString);
        while (getNextId(confString, pos, id))
            iIgnoreSpellIds->set(id, true);
    }
}

//===============================================

bool VMapFactory::checkSpellForLoS(unsigned int pSpellId)
{
    return !iIgnoreSpellIds->containsKey(pSpellId);
}

//===============================================
// just return the instance
IVMapManager* VMapFactory::createOrGetVMapManager()
{
    if (!gVMapManager)
        gVMapManager = new VMapManager2();              // should be taken from config ... Please change if you like :-)
    return gVMapManager;
}

//===============================================
// delete all internal data structures
void VMapFactory::clear()
{
    delete iIgnoreSpellIds;
    delete gVMapManager;

    iIgnoreSpellIds = nullptr;
    gVMapManager = nullptr;
}
}
